Explicit control of speculation

Details Explicit control of speculation Explicit control of speculation

2003-07-15

2008-11-11

Dollinger, Tonia L. M. (Department: 2181)

Electrical computers and digital processing systems: processing

Processing control

Branching

Reexamination Certificate

active

07451300

ABSTRACT:
Described are methods and systems that allow partial speculation (e.g., speculation within constraints). With partial speculation, after a fault is detected for example, speculation remains enabled for processor registers and other memories private to a microprocessor, while speculation normally permitted for certain other operations is suspended. Accordingly, while the fault is dispatched, some speculation is permitted as opposed to suspending all speculation. As such, microcode that makes use of speculation can be written.

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“Checkpointe Repair for Out-of-order Execution Machines”; Wen-mei Hwu and Yale Patt; 1987; ACM.
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